So far, like the quad-core Exynos powered Galaxy S III, the new quad-core Exynos powered Samsung Galaxy Note II can work with the FiiO E7, the iBasso D12, Leckerton UHA-6S MKII, the ODAC and the VentureCraft Go-Dap X; has some issue with the HeadAmp Pico; and doesn’t work with the FiiO E17.

So, in regard to standard USB audio, the behaviour of the Galaxy Note II is likely identical to the behaviour of the Galaxy S III.

Not sure I believe them but the response I got from Fiio Customer Servics regarding me using an HTC One X+ with an E7:

"Our E7 or E07K can support it but need a USB OTG cable"

I'm not 100% on what the configuration of that OTB cable would be? It'll be a while before I get the chance to test this out as I'm getting the E7 for xmas. I'd love to know if anyone else has had success with this or similar set up though.

Which DAC is a good fit for my needs? I'm not asking for "the best one" because that's subjective of course.

1) Galaxy S3 to USB-OTG to DAC to Car Stereo via 3.5mm input.

2) Prefer to have GS3 power the DAC if possible (I bought a three way USB-OTG cable).

3) Needs to be small and under $60 USD new or used, for my budget.

This won't be used anywhere other than in my car stereo, so it'll get permanently mounted (so to speak).

Thanks for any suggestions! Sorry, I'm new to the DAC world.

Check out the UD100 from Stoner Acoustic. $52 based on a well regarded Sabre DAC chip. I am pretty sure I saw a post about someone using it with the S3. It is super small. There is a thread on Headfi about it and some other alternatives.

Just got off phone to HTC & they can't vouch for compatibility of all devices but they did say the HTC One X will accept usb OTG for audio out (still sceptical but for the cost of a cable I'll have a dabble)!